Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb96f7abf5f0104…

MALICIOUS

PDF

40.2 KB Created: 2020-08-26 13:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e7af6f80d9883e99cbe6237a504c27 SHA-1: 6c3e8ca3e87f4f8aa7aadd03d536ad264a3794d9 SHA-256: ccb96f7abf5f0104f56a6e296eff267d896c290adf0a79bf10a7ba934a4b196d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, characteristic of a link farm designed to manipulate search engine results or distribute malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=como+realizar+ensambles+en+solidworks'. The document body itself contains garbled text and some of the extracted URLs, reinforcing the malicious intent.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=como+realizar+ensambles+en+solidworks
    • http://pogediw.tamara-vasquez.com/uploads/1/3/0/7/130776089/3befbb40ebea59.pdf
    • http://vadexud.pvgindy.com/uploads/1/3/0/7/130776106/rokor_lasogatomi_sokomajorotomi.pdf
    • http://files.uclarisestudy.com/uploads/1/3/2/6/132681617/872543.pdf
    • http://files.tiffinindia.ca/uploads/1/3/2/3/132303270/xaxanenafalubozidolu.pdf
    • http://detifata.dugeogsoc.com/uploads/1/3/1/3/131398368/xebeduxoripa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6878/2757/files/xifetoguzudag.pdf
    • https://cdn.shopify.com/s/files/1/0463/2962/6781/files/developing_tactics_for_listening.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/wowubulerel.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/wolujixedodazol.pdf
    • https://cdn.shopify.com/s/files/1/0450/4659/5734/files/best_android_graph_library.pdf
    • https://cdn.shopify.com/s/files/1/0431/3281/3469/files/16443330804.pdf
    • https://cdn.shopify.com/s/files/1/0460/7705/1044/files/gutunapazoxawirariw.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/all_hail_shadow.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/safojejupulat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/44386142986.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8445/files/matumarirugi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006091.bin
c8bd7cf1342d82397cb4a8075b4233827a237233dc4450aed9d3afa7e56f97dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 5220 bytes
font_01_sfnt_off0000724b.bin
0fcac497f28594dbfd7a79792ba29bf662bc94e81cc90c15ebaf08dd763db5d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724B 10200 bytes

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